Don't let the results disappoint you. Its a matter of how soon one tests. If you test too early, it may not detect it.
I have irregular cycles, so I tested negative on about 6 tests before I got my positive. I tested every 3-4 days -- I didn't have the patience to wait longer than that!
I tested negative 1 week before, 3 days before and 1 day after af was supposed to arrive. my pregnancy was confirmed 1 week later at my dr's office
I tested positive first time, but made sure to take it a while after AF was due. ( 4-5 days) I wanted the results to be accurate even though I was dying to know...
I got a BFN but it was because I tested too early....then I tested a day before when I thought I would get AF and got my bFP (my cycles were never the same # of days, so I was calculating by the longest cycle)
I tested many times and got a BFN. A month later I found out I was PG, and it turns out I ovulated really late in my cycle.
